Impeller structure and projection equipment

ABSTRACT

An impeller structure including two rotating discs, connecting components, and high-speed blades is provided. Each rotating discs includes a hole, locking holes, and snap-in slots. The snap-in slot includes an outer slot and a limit slot. The connecting component connected to the rotating discs through the locking holes. The high-speed blade includes a body and protrusions. The body includes two lateral walls. The high-speed blades are disposed between the rotating discs. Under high-speed rotation, the high-speed blade moves toward an outer edge of the rotating disc due to a centrifugal force. The lateral wall of the body is snapped into the snap-in slot and tightly fitted in the outer slot. The protrusion is snapped into the limit slot and restricts displacement of the protrusion. The impeller structure is easy to disassemble and assemble, and can withstand high rotating speeds. Also provided is a projection equipment with the impeller structure.

CROSS-REFERENCE TO RELATED APPLICATION

This non-provisional application claims priority under 35 U.S.C. §119(a) to Patent Application No. 108132879 filed in Taiwan, R.O.C. onSep. 11, 2019, the entire contents of which are hereby incorporated byreference.

BACKGROUND Technical Field

An impeller structure is provided, including blades suitable forhigh-speed sandblasting. The present invention further relates to aprojection equipment including the impeller structure.

Related Art

Sandblasting is a destructive processing method for a material surface.Small abrasive sand particles are used to impact the material surface,so that the material surface produces a particle-like depression to forma matte surface or an eroded surface, thereby achieving the effects ofremoving gold rust and oxide layers, beautification, atomization,extinction, and the like, and can improve a finish of the materialsurface. Therefore, sandblasting is widely used.

In order to achieve the above purpose, an impact speed and force of thesand particles on the material surface are very important. Generally,sands are cast by the impeller structure, but a traditional impellerstructure has a limited rotation speed, and cannot achieve a full finishon the material surface. In addition, the impeller structure is not easyto disassemble and disassemble, and it takes time to replace the blades.

SUMMARY

Therefore, an embodiment of the present invention provides a high-speedblade including a body and protrusions. The body includes a first endwall, two lateral walls, and a second end wall, the first end wall beingseparated from the first end wall by the two lateral walls, two oppositecatching and tossing slots being disposed in the first end wall, the twolateral walls, and the second end wall, a bottom surface of each of thecatching and tossing slots being a catching and tossing surface.

Two protrusions are respectively disposed on two sides of the body,respectively connected to each of the lateral walls, and close to thefirst end wall.

In an embodiment of the high-speed blade as described above, a distancebetween the lateral walls is gradually shortened by extending from thefirst end wall to the second end wall.

In an embodiment of the high-speed blade as described above, thecatching and tossing surface extends from the second end wall to thefirst end wall at an inclined angle.

In an embodiment of the high-speed blade as described above, each of thelateral walls includes an upper edge and an opposite lower edge, adistance between the upper edge and the lower edge being graduallyshortened by extending from the first end wall to the second end wall.

In an embodiment of the high-speed blade as described above, an outerperipheral surface of each of the protrusions includes a bottom surface,two side surfaces, and a top surface, the bottom surface being flushwith the first end wall, the top surface being a first circumferentialsurface, and a distance between the two side surfaces is shorter than adistance between the two lateral walls.

The present invention further provides an impeller structure accordingto an embodiment, including two rotating discs, a plurality ofconnecting components, and a plurality of high-speed blades as describedabove.

Each of the rotating discs includes one hole, a plurality of lockingholes, and a plurality of snap-in slots, the hole being located in acenter of the rotating disc, the locking holes and the snap-in slotsbeing located outside the hole, and the locking holes and the snap-inslots being alternately disposed by using the hole as a centre ofsymmetry, where each of the snap-in slots is in communication with thehole and extends to an outer edge of the rotating disc, and includes anouter slot and a limit slot, the limit slot being located in the outerslot, being in communication with the hole and extending toward theouter edge of the rotating disc, and including two side walls and alimit wall, two sides of the limit wall being respectively connected tothe side walls. Two ends of each of the connecting components arerespectively connected to the rotating discs through the locking holes.The plurality of high-speed blades are disposed between the rotatingdiscs, where the lateral wall of each of the high-speed blades issnapped into the snap-in slot, and the protrusion is snapped into thelimit slot.

In an embodiment of the impeller structure as described above, adistance between two side walls of each of the snap-in slots isgradually shortened by extending from the hole to the outer edge of therotating disc.

In an embodiment of the impeller structure as described above, one sidewall of each of the snap-in slots includes a top edge and a bottom edge,a distance between the top edge and the bottom edge being graduallyshortened by extending from an outer edge of the hole to the outer edgeof the rotating disc.

In an embodiment of the impeller structure as described above, the limitwall of each of the limit slots is a second circumferential surface.

The present invention further provides a projection equipment accordingto an embodiment, including a feeding device, a projection device, and apower rotating device. The feeding device includes a receiving port. Theprojection device is in communication with the feeding device andincludes a rotating shaft component and the impeller structure asdescribed above, two ends of the rotating shaft component beingrespectively disposed in the hole, and the rotating shaft componentincluding a discharge port. The power rotating device includes a drivingshaft connected to the rotating shaft component of the impellerstructure to drive the impeller structure to rotate.

According to the foregoing one or more embodiments, the high-speedblades have a simple structure and high strength. The high-speed bladesare easy to use in combination with the turntables. The impellerstructure is easy to assemble and disassemble, and can withstand arotating speed range of 5000 rpm to 40000 rpm, which has variablefrequency. In comparison with a traditional impeller structure, thespeed is effectively increased, and the effect of sandblasting is moreobvious and efficient.

In addition, the present invention further provides a projectionequipment using the above-mentioned high-speed blade and impellerstructure according to an embodiment, and the projection equipment canbe widely used in industries and fields that require sandblasting.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of an appearance of an embodiment of ahigh-speed blade according to the present invention.

FIG. 2 is a schematic exploded view of an embodiment of an impellerstructure according to the present invention.

FIG. 3 is a schematic assembly diagram of an embodiment of an impellerstructure according to the present invention.

FIG. 4 is a schematic diagram of an appearance of an embodiment of aprojection equipment according to the present invention.

DETAILED DESCRIPTION

FIG. 1 is a schematic diagram of an appearance of an embodiment of ahigh-speed blade 121 according to the present invention.

The high-speed blade 121 includes a body 1211 and protrusions 1212. Thebody 1211 includes a first end wall 1211 a, two lateral walls 1211 c,and a second end wall 1211 b, the first end wall 1211 a being separatedfrom the first end wall 1211 a by the two lateral walls 1211 c, twoopposite catching and tossing slots 1213 being disposed in the first endwall 1211 a, the two lateral walls 1211 c, and the second end wall 1211b, a bottom surface of each of the catching and tossing slots 1213 beinga catching and tossing surface 1213 a. The catching and tossing surface1213 a is used as a receiving surface of sand particles and the sandparticles are cast onto a material surface through centrifugal forceduring rotation to achieve the effects of removing gold rust and oxidelayers, beautification, atomization, extinction, and the like.

Two protrusions 1212 are respectively disposed on two sides of the body1211, respectively connected to each of the lateral walls 1211 c, andclose to the first end wall 1211 a. In this embodiment, the protrusions1212 and the body 1211 are an integrated structure. In some embodiments,the protrusions 1212 are respectively connected to each of the lateralwalls 1211 c in a locking manner. In addition, in this embodiment, anouter peripheral surface of each of the protrusions 1212 includes abottom surface 1212 b, two side surfaces 1212 c, and a top surface 1212a, the bottom surface 1212 b being flush with the first end wall 1211 a,the top surface 1212 a being a first circumferential surface, and adistance between the two side surfaces 1212 c is shorter than a distancebetween the two lateral walls 1211 c.

In addition, in this embodiment, a distance L1 between the lateral walls1211 c is gradually shortened by extending from the first end wall 1211a to the second end wall 1211 b. However, the present invention does notlimit a proportion and a size of the gradually shortened distance. Inthis structure, force of casting sand particles during rotation aportion of the catching and tossing surface 1213 a close to the secondend wall 1211 b is raised.

In addition, in this embodiment, the catching and tossing surface 1213 aextends from the second end wall 1211 b to the first end wall 1211 a atan inclined angle α. A size of the inclined angle α is related to thenumber of sand particles that can be received by the catching andtossing surface 1213 a and strength of the casting force, and is notlimited in the present invention.

In addition, in this embodiment, each of the lateral walls 1211 cincludes an upper edge and an opposite lower edge, a distance L2 betweenthe upper edge and the lower edge being gradually shortened by extendingfrom the first end wall 1211 a to the second end wall 1211 b. Asmentioned above, the present invention does not limit a proportion and asize of the gradually shortened distance.

In some embodiments, a material of the high-speed blade 121 is made ofalloy steel, but the present invention does not limit the material. Insome embodiments, the high-speed blade 121 may be made of other metalmaterials or alloys.

FIG. 2 and FIG. 3 are a schematic exploded view and a schematic assemblydiagram of an embodiment of an impeller structure 12 according to thepresent invention. The impeller structure 12 includes two rotating discs122, a plurality of connecting components 123, and a plurality ofhigh-speed blades 121 as described above.

Each of the two rotating discs 122 includes one hole 1221, a pluralityof locking holes 1222, and a plurality of snap-in slots 1223, the hole1221 being located in a center of the rotating disc 122. The hole 1221may be provided with a rotating component for storing sand particles,such as a barrel slot, and has a discharge port 1241 for dischargingreceived sand particles onto the catching and tossing surface 1213 a, asdescribed in detail below.

The locking holes 1222 and the snap-in slots 1223 are located outsidethe hole 1221, and the locking holes 1222 and the snap-in slots 1223 arealternately disposed by using the hole 1221 as a centre of symmetry.

Each of the snap-in slots 1223 is in communication with the hole 1221and extends to an outer edge of the rotating disc 122, and includes anouter slot 1223 a and a limit slot 1223 b, the limit slot 1223 b beinglocated in the outer slot 1223 a, being in communication with the hole1221 and extending toward the outer edge of the rotating disc 122, andincluding two side walls 12231 and a limit wall 12232, two sides of thelimit wall 12232 being respectively connected to the side walls 12231.

Two ends of each of the connecting components 123 are respectivelyconnected to the rotating discs 122 through the locking holes 1222. Theplurality of high-speed blades 121 are disposed between the rotatingdiscs 122, where the lateral wall 1211 c of each of the high-speedblades 121 is snapped into the snap-in slot 1223, and the protrusion1212 is snapped into the limit slot 1223 b.

In other words, a structure of the snap-in slot 1223 corresponds to astructure of the high-speed blade 121, and the high-speed blade 121 ismounted in the snap-in slot 1223 in a snap-fit manner. When theturntable 122 rotates, due to high-speed rotation, the high-speed blade121 moves toward the outer edge of the turntable 122 due to acentrifugal force. The lateral wall 1211 c of the body 1211 is tightlyfitted in the outer slot 1223 a of the snap-in slot 1223. The protrusion1212 is disposed in the limit slot 1223 b and the limit slot 1223 b canrestrict displacement of the protrusion 1212.

The impeller structure 12 described above can withstand high rotatingspeeds. In comparison with a general projection structure, the speed andimpact force of sandblasting are improved, and the effect ofsandblasting is more obvious.

In these embodiments, the structure of the snap-in slot 1223 correspondsto the structure of the high-speed blade 121. For example, a distance L3between two side walls of each of the snap-in slots 1223 is graduallyshortened by extending from the hole 1221 to the outer edge of therotating disc. However, the present invention does not limit aproportion or a specified size of the shortened distance. A side wall ofeach of the snap-in slots 1223 includes a top edge and a bottom edge, adistance between the top edge and the bottom edge being graduallyshortened by extending from an outer edge of the hole 1221 to the outeredge of the rotating disc 122. In addition, the top surface 1212 a ofthe corresponding protrusion 1212 is a first circumferential surface,and the limit wall 12232 of each of the limit slots 1223 b is a secondcircumferential surface.

FIG. 4 is a schematic diagram of an appearance of an embodiment of aprojection equipment 100 according to the present invention. Theprojection equipment 100 includes a feeding device 2, a projectiondevice 1, and a power rotating device 3. The feeding device 2 includes areceiving port 21 that can receive sand particles.

The projection device 1 is in communication with the feeding device 2.The projection device 1 includes a housing 11 and an impeller structure12, the impeller structure 12 being disposed in the housing 11. In someembodiments, the projection device 1 is externally mounted, and there isno housing 11. The housing 11 is mounted to effectively recover the sandparticles and avoid environmental pollution.

The housing 11 includes an injection port 14 configured to receive thedischarged sand particles when the catching and tossing surface 1213 arotates to pass through the discharge port 1241 and cast the sandparticles out of the housing 11 through the injection port 14 due to acentrifugal force, so that the sand particles hit a material surface. Inthis embodiment, a rotating shaft component 124 includes an innercylinder 1243 and an outer cylinder 1242. The inner cylinder 1243 is incommunication with the receiving port 21, and a plurality of openingsare further disposed in the inner cylinder 1243 at intervals to helpdischarge the sand particles.

The power rotating device 3 includes a driving shaft 31 connected to therotating shaft component 124 of the impeller structure 12 to drive theimpeller structure 12 to rotate. In an embodiment, the power rotatingdevice 3 is a motor.

The projection device 100 may be disposed in different orientations in asystem according to processing directions of the material surface, forexample, mounted in a longitudinal orientation or in a lateralorientation. In other words, the projection device 100 in the presentinvention does not limit the processing direction of the materialsurface, and adopts different settings depending on the needs of theindustry.

According to the foregoing one or more embodiments, the high-speedblades have a simple structure and high strength. The high-speed bladesare easy to use in combination with the turntables. The impellerstructure is easy to assemble and disassemble, and can withstand arotating speed range of 4000 rpm to 50000 rpm, which has variablefrequency. In comparison with a traditional impeller structure, thespeed is effectively increased, the effect of sandblasting is moreobvious and efficient, and problems encountered in the prior art areresolved.

In addition, the present invention further provides a projectionequipment using the above-mentioned high-speed blade and impellerstructure according to an embodiment, and the projection equipment canbe widely used in industries and fields that require sandblasting.

What is claimed is:
 1. An impeller structure, comprising: two rotatingdiscs, each of the two rotating discs comprising one hole, a pluralityof locking holes, and a plurality of snap-in slots, the hole beinglocated in a center of the rotating disc, the locking holes and thesnap-in slots being located outside the hole, and the locking holes andthe snap-in slots being alternately disposed by using the hole as acentre of symmetry, wherein each of the snap-in slots is incommunication with the hole and extends to an outer edge of the rotatingdisc, and comprises an outer slot and a limit slot, the limit slot beinglocated in the outer slot, being in communication with the hole andextending toward the outer edge of the rotating disc, and comprising twoside walls and a limit wall, two sides of the limit wall beingrespectively connected to the side walls; a plurality of connectingcomponents, two ends of each of the connecting components beingrespectively connected to the rotating discs through the locking holes;and a plurality of high-speed blades, each of the high-speed bladescomprising: a body comprising a first end wall, two lateral walls, and asecond end wall, the first end wall being separated from the first endwall by the two lateral walls, two opposite catching and tossing slotsbeing disposed in the first end wall, the two lateral walls, and thesecond end wall, a bottom surface of each of the catching and tossingslots being a catching and tossing surface; and two protrusions disposedon two sides of the body, respectively connected to each of the lateralwalls, and close to the first end wall, wherein each of the high-speedblades is disposed between the rotating discs, the lateral wall of eachof the high-speed blades is snapped into the snap-in slot, and theprotrusion is snapped into the limit slot; and at a rotation speed, thehigh-speed blade moves toward the outer edge of the rotating disc due toa centrifugal force, so that the lateral wall is tightly fitted in theouter slot, and the limit slot restricts displacement of the protrusion.2. The impeller structure according to claim 1, wherein a distancebetween the lateral walls of the high-speed blade is gradually shortenedby extending from the first end wall to the second end wall.
 3. Theimpeller structure according to claim 1, wherein the catching andtossing surface of the high-speed blade extends from the second end wallto the first end wall at an inclined angle.
 4. The impeller structureaccording to claim 1, wherein each of the lateral walls of thehigh-speed blade comprises an upper edge and an opposite lower edge, adistance between the upper edge and the lower edge being graduallyshortened by extending from the first end wall to the second end wall.5. The impeller structure according to claim 1, wherein an outerperipheral surface of each of the protrusions of the high-speed bladecomprises a bottom surface, two side surfaces, and a top surface, thebottom surface being flush with the first end wall, the top surfacebeing a first circumferential surface, and a distance between the sidesurfaces is shorter than a distance between the lateral walls.
 6. Theimpeller structure according to claim 1, wherein a distance between twoside walls of each of the snap-in slots is gradually shortened byextending from the hole to the outer edge of the rotating disc.
 7. Theimpeller structure according to claim 1, wherein one side wall of eachof the snap-in slots comprises a top edge and a bottom edge, a distancebetween the top edge and the bottom edge being gradually shortened byextending from an outer edge of the hole to the outer edge of therotating disc.
 8. The impeller structure according to claim 1, whereinthe limit wall of each of the limit slots is a second circumferentialsurface.
 9. A projection equipment, comprising: a feeding devicecomprising a receiving port; a projection device in communication withthe feeding device and comprising: the impeller structure according toclaim 1; and a rotating shaft component comprising a discharge port, twoends of the rotating shaft component being respectively disposed in thehole; and a power rotating device comprising a driving shaft, thedriving shaft being connected to the rotating shaft component of theimpeller structure to drive the impeller structure to rotate.